Running a long ester like that, cycles typically are ran a bit longer.. Say 10-12+ weeks. 8 week cycles are usually for shorter esters, since they are faster acting and dont take a couple weeks before your system is "loaded" (Most likely common sense when taking the factors into consideration and deducing by logic - but figured Id say it anyway)
Anyway point being, although not a BAD thing in some circumstances (ie: first cycle, your just testing gear out to see how well you respond to it) your cycle with the long ester is a bit short and it wouldn't be a bad thing to extend out 2-4 weeks. It would actually be your bread an butter weeks since now is the time when you would normally start seeing the most benefits from long esters.
As for switching esters, I wouldnt recommend. Stick to what you've already used or this cycle. Could run something like sust if your bent on it, but I would just wait till the next cycle imo.
As for throwing in something else, I wouldnt recommend either. This is your first cycle, just keep things simple, walk before you run. ESPECIALLY dont add tren, tren is no joke, shit can get crazy on it. Your almost done anyway. BUT if you are really itching to try something else, you could throw in some winny or var but judging from your pics you bf is just above where you would really see good results. Get a couple more runs with test in before you start stacking other compounds in. Try sust.
Anyway good luck bro