If YOU are a hair stylist or nail tech or both and YOU plan on opening this salon so YOU can build hair/nail clientele and the tanning beds are just "extra" income -- that's one thing and might make sense.
If you are going at this like an "entrepreneur" who thinks you will be able to "find" hair stylists to pay you $125/week and $70/week and then YOU are going to take on the entire RISK for that, as well as however much you can make off the tanning - everyone has right to be concerned for you!
Rent - $950/mo or about $12K/yr.
Payroll - even if you aren't "paying" yourself, should at least figure a $7/hr min wage = $25K
Utilities, phone, water, gas, internet (?) - $6K
Advertising - $12K (minimum)
Supplies/
lamps/maint - $12K
Etc, etc.
As mentioned, nail techs (especially) and hair stylists are notoriously hard to find and keep. It takes them awhile to build a clientele, and they may not be able to pay $500/mo when they are only seeing a few folks a day initially. But if they leave, trying to attract people to your 3 bed "salon" and making it on that $$ alone - impossible!
The numbers dwhite quoted are industry figures and nothing in your set-up has you poised to do better. I'd abandon the idea unless you make changes or are prepared to barely break even or lose money.