Hi, I'm 6'4'' and 250 buy was 330 when I took up biking again after 20+ years relaxing.
Early on the Hoss will be great I'm sure - or good enough to know if you like the biking. I started off on a cheapie Hybrid (that I broke and gave to wife) and then a somewhat less cheap hybrid with clipless pedals and then after 2 years of working up to it...
A steel Surly Cross Check size 62 that is no my winter bike. Amd now a 20 year old Specialized Allez steel road bike with modern drivetrain.
There is no end to the spend but ride what you have and figure out what kind of riding you enjoy and then look at craigslist for a deal and wait and wait but some big bike will show up at a silly price some time.
Have fun.