So just to clarify, you're saying add 500 to the 200 to make 700 per week?
Nope, simply raise the dose to 500mg. Unless of course you wanted 700mg.. but for a first blast, 500mg/week is plenty.
What would you recommend and would the strength & size gains be better that way?
Most compounds are stronger than test, but not all. They each have their own benefits though.
I recall you haven't blasted/used AAS before? With no experience your best bet
may be to just increase the test, but since you're on TRT you get the benefits of not having to worry about suppression. In our case you could simply add something mild but nice like Anavar (anywhere from 50-100mg/day) for 6- 8 weeks.
Or if you wanted an injectable, something like primo/eq/nandrolone etc. would be great.
The reason I avoid high test now is because my tendons are quite weak from using high test for so long and lifting heavy weights. High levels of test degrade collagen synthesis and heavy lifting breaks them down somewhat. Normally they would repair stronger (just like the muscle tissue) but high levels of test really impair that. So high test cycles = the muscular strength of a gorilla with the connective tissue of an old man. Doesn't help at all when you really want to lift heavy and keep pushing things.
Keep in mind, most people never have an issue with tendons provided you don't lift stupid weights and focus on good form. I had to learn the hard way when I was younger unfortunately lol. So I stick to compounds that don't impair collagen and try to stick with ones that actually benefit them; Anavar, Nandrolone, EQ (Boldenone.)
Every compound is slightly different, they all have their pro's and con's so make sure you do plenty of reading into whatever you go with beforehand. For example, EQ (Boldenone) raises RBC production quite rapidly so the need to donate blood on it becomes more necessary otherwise your blood can get too thick. Nandrolone (NPP/ Deca) is a 19-nor which will cause a rise in Prolactin levels (not good) so you need to be aware of how to combat that should those sides appear.
Anavar is AWESOME and carries little to no bad sides, so it's a great start for TRT guy's. It's not quite as powerful as test but it doesn't bloat you at all and gives a nice vascularity. It also helps mobilize visceral fat (around the organs) so a great addition on a cut. I love it on bulks too though. End of the day, do some reading around & come up with a compound/cycle you'd like to try and post up here and we can give feedback.
Sorry for the rambling lol, hope this helps though