idk he said that if he up the calories he can get heavier but its fat, said hes been up to 225 but was bloated and feeling like shit
If he's like most guys his age, when he ups his calories he does do in a big way right from the start, that's why he gets fat and bloated. You can't make a huge jump in calories and not expect to at least feel bloated.
What he needs to do is gradually increase calories as needed. You need carbs to grow, that's a given. Lets say he's taking in around 300g of carbs per day and that is enough for maintenance, he simply needs to slowly add in more carbs, not jump up to 800g a day out of nowhere. Bump it up say 50g of carbs per day, if he stagnates on that, bump it up another 50 and so on...let his body adjust and get used to the extra carbs. There are other things to consider as well, but my guess is he gets fat/bloated because he takes his carb and calorie intake up dramatically all at once.
As for his cycle, if he's reached his natural limit or not, either way he's going to do what he wants. I don't think he should mess with insulin when it's pretty obvious he doesn't have a full handle on his diet already.
As for a first bulking cycle, test and dbol is fine and is a solid cycle. Now I'm not going to sit here and be a hypocrite though, some of my guys I work with, ones I work directly with, sometimes I'll have them run a little deca with their first cycle, but the big difference there is I can keep an eye on them and I'm working hand in hand with them. Test/deca/dbol can be a good cycle even for a first timer, but diet is still and always the most important thing.
Your T-3 question, yes T-3 by itself is not a good idea. Too easy to lose muscle tissue doing that without AAS.