Have been on bigger pockets a while, but havent made full use of the site. 

Do I need to talk to a real estate lawyer for my own lease, or do I use a site like RocketLawyer?

In no particular order I have listed some of the most popular markets for out of state investorsCincinnati, OhioDayton, OhioToledo, OhioYoungstown, OhioCincinnati, OhioMemphis, TennesseeSaint Louis, MissouriIndianapolis, IndianaDetroit, MichiganErie, PennsylvaniaLouisville, KentuckyMilwaukee, WisconsinJackson, MississippiEach of these markets is popular with turnkey investors because of the low barrier to entry, high rental demand & high rent to price ratio.

So a community of these homes could definitely provide an affordable downsized housing option for active seniors (independent living style) - especially when you provide amenities on site, which will be required if you want to compete with other independent living style communities and apartment buildings.

I really do appreciate all the advice on this site and can't wait until I'm the one giving it instead of only asking for it. 

I was able to get them in touch with an off booking sites place that had an opening in town.

One thing people haven't mentioned is look for your own ad on the key rental syndicated sites and see if it presents well. 

Their customer support is terrible and some of their software, but they have about 8x the site traffic in general than Airbnb and VRBO combined, surprisingly.  

I mainly want a site that offers advertising the property, online payment options, maintenance requests & at least a basic accounting aspect.Thank you in advance!

I dont think its a terrible idea to post to sites now that say updated photos coming soon.