How long to wait in-between Cycles while on TRT?

So I'm on TRT year-round and I'm approaching my 16th week of Test-C 500mg a week.

It's my first cycle and it went well!

I'm thinking about going for another 6 weeks adding 50mg of Anavar to maximize any gains before I go back to 200mg a week.

This has been a great first cycle and I'm considering doing a tren + test cycle as my next one.

Since I'm not trying to recover my natural testosterone production, how long should I wait before attempting my next cycle?

I'd like to do test + tren and put on some serious mass before summer. If my labs are good and I feel great, how long should I wait before starting?