im 6'0 190lbs. Fairly good shape, play competitive basketball almost everyday. Used to be able to grab rim without any sort of workout before but had horrible tendinitis in both knees which caused me to stop playing for awhile and well haven't been able to jump at all the last couple of years.
For my size and how much i play my vert is embarassing 
i cant even touch rim anymore SMH
i want to know realistically if i will ever be able to dunk?
so you want someone to tell you that you should be able to dunk, at 6'0, within say 6 months or so?
no idea.. maybe, maybe not.. if you're not even touching rim right now, going to be hard, but there's no reason you couldn't get close.. and if you can get close, then that means you'll be dunking a little while after that.. so dunk in the near future, no idea... dunk longer down the road, sure.. that's if you do everything right.. i don't know much about you so you'd have to stay healthy, get stronger, jump, eat right, maintain a decent body composition etc.. if you do all of that, you'll slowly gain vert.
i plan on getting a jump box to do plyo exercises in my garage during the summer, depth jumps and what not. after i get started for a few weeks i will start to do some weight training like leg press and leg extensions with some weighted calf raise.
i would get plyos out of your mind.. no need for depth jumps at this point.
stick to the basics and master them:
- get extremely fit : short maximal effort sprints eventually 10-30m, longer tempo sprints, jump rope, low level reactive work (light rebounding exercises), jump/basketball whatever
- get extremely strong with proper form: squat, lunge, calve raise, some form of hamstring assistance (ghr/rdl/reverse hyper/45deg hyper etc).. leg extensions could be done tke style, but i'd stay away from them in general.. if you do decide to do leg extensions, make sure you're doing leg curls also.. leg press is garbage for what you're trying to do.
- eat good as consistently as possible: eat clean, no junk, make sure you eat properly the day before and day of your important workouts.. you want to be "all there" mentally, not suffering from lethargy.
- stretch: make sure you're stretching after each workout, keep you from getting tight and pulling/straining muscles.
with the workouts i listed and and if im dedicated, should i be able to gain a lot of vert during the summer and maybe be able to dunk one day?
with the workout you listed, no, with a better workout/training system, of course.
if you doubt yourself at all, that's a major problem.. you're 6'0, it's 99.9% doable.. you have to look at becoming more athletic overall.. like i said, decent body composition, extremely "fit" (sprints/jumps/low level reactive work/sport), and get much stronger.. I don't know your lifts but I assume they aren't good RELATIVE to your bodyweight.. you need to make sure you improve your power by getting strong relative to your 190 lb bodyweight.
adios
