Crunching The Numbers, Am I Missing Something?? (newb)

Hello!
Trying to do some nitty gritty number crunching as my husband and I are VERY seriously considering becoming O/Os. Any input would be super helpful, although I have spent some substantial time researching the industry/lifestyle on sites and forums, I think it's always best to hear straight from the horse’s mouth. A little background...

-Husband and I are mid 30s, no kids, no house/mortgage payment (apt lease is up in Oct). Aka no substantial debt or expenses. We will be on the road together so getting back/having a lot of home time would not be a priority

-Husband has always worked for himself, at one point we owned/operated a retail brick and mortar business together, so we understand how to run a biz, and work well together having complementary strengths.

-My father in law owned an industrial plastics recycling company so my husband does have some familiarity w/ semi-trucks/trucking from working with his Dad at the plant in high school/college.

-We would run power only and have the means to make a substantial investment in a super sleeper (bed, bathroom, kitchenette, etc) to make life on the road more comfortable/stay out longer etc. It will literally be our house 90% of the time.

-Being together all of the time doesn't bother us. He would drive while I navigate, check load boards, do any back office work required, cook, clean, etc.

-We would also have at least one other stream of income besides trucking to help support us, but trucking would be primary.

-Being on the road/driving doesn't bother us. We've done 17-19 hour days on road trips before, although I realize there are laws/set duty hours preventing this as a truck driver and that it's substantially different than driving a four wheeler.

From what I've researched, we’d likely sign onto a company. The one we’re most interested in offers 82% of linehaul (rather than cpm) and claims solos are doing $7k-$9k per week gross. They also offer detention/layover pay, general/auto/cargo insurance, and a fuel card. We took the $7k (we prefer to look at “worst case scenario”) and put it in excel with other expenses and that $7k doesn’t leave much net left over.

I’ve copied and pasted the numbers below (some borrowed from another O/O’s P&L he posted), but are we missing something?? We’re ok with a bit of “baptism by fire” starting out, but only if it makes fiscal sense.
I’m hesitant to talk to a recruiter assuming they’d blow a bit of smoke up our butts.

Thank you in advance for your responses!

$7000 x 49 weeks (3 weeks off) = $343,000 gross

82% of gross = $281,260

Fuel (assuming 2k mile/wk, 5mpg @ current prices = $100k-ish) = $181,260

Assuming $3500/mo truck payment ($42k/yr) = $139,260

Reserve 20% for maintenance ($27,852) = $111,408

Insurance- confused what portion the company pays (truck, medical, hsa) = $31,000) = $80,408

Various supplies/tools ($3000) = $77,408

Phone/Internet ($1000) = $76,408

Legal/accounting for the LLC or SCorp ($6000) = $70,408

Savings @ 10% min ($7,408) = $63,000

Trailer rentals ($235/wk @ 12 wks? Not sure how much this would be needed = $2,820) = $60,180

So about $60k/yr before we pay ourselves, buy food, clothes, etc

 

We have not contacted them yet, that is our next step. I wanted to ask the people out there actually living it before I asked someone who's sole job is to get people to sign up ha
Their only requirements on their site are: At least 25 years old, At least two years of verifiable work experience (did not specify truck exp), No more than two moving violations in the last two years, No more than one preventable accident in the last two years, No major OOS PSP violations, No record of excessive speeding or safety zone violations, Ability to build relationships with others easily, Dependable with impeccable time-management skills, Positive, professional attitude, Truck year 2000 or newer (and pass DOT inspection).
We considered the company driver route, but it seems that most companies (unless you're running teams for a fleet owner doing expediting in a straight truck) give you a small sleeper cab which looks like they'd be tight for 2 people to live in practically full time

 

Ohhh, I don't know why I haven't thought of the concert/expo equipment route. It just hasn't popped up in my research, but I do remember seeing someone w/ a super sleeper delivering to a convention center. I'll be looking into this ASAP. Thank you!!

 

I have poked around OOIDA's site a bit and used their Cost Per Mile calculator. I just wanted to make sure we were looking at the numbers correctly, but I do plan to dig around on their site a bit more.