If you're looking to cut and want to use test enth at just 500mg/week, then I don't see the reason for using clomid, hcg and letro on cycle like that. With just the test enth, primo and tbol alone, you can get away with cutting for that length and not need an anti-e except maybe nolva and/or proviron on occasion. Clomid is gonna make you sappy and do you really need your nuts swinging low on cycle with that and all the HCG? (Unless you're a porn star and everyone stares at them all day.) I'd save the HCG, clomid and letro for after - even then I don't think you'll need all 3 for PCT anyways. During cycle, it's best to stick with basics like nolva or proviron to keep gyno sides away - either of them or both together will help with keeping the lean look and getting rid of any bloat. The rest can wait till after the cycle. But since this isn't your first cycle, just that dose of 500mg/week of test enth alone shouldn't warrant a problem except with maybe a slight bit of water retention where nolva and/or proviron will take care of. You'll also find you won't need them the entire cycle, maybe not even till after 6-8 weeks anyway.
Also - if your workouts are intense, 40mg of Tbol is fine - the difference between 40-50mg of Tbol is miniscule if you beat your body up enough. If looking for good recovery, strength gains even during a cutting cycle, and overall better repair of the tissue while dieting - I'd go with 50-100mg of var each day over Tbol. But this is your cycle and hope you accomplish your goals. Tbol is a good compound and good choice for cutting cycles.
As far as all the anti-e's during the cycle, there's really no need to kill off all estrogen in your body. Especially when dieting, you need a tiny amount to help with your immune system so you don't get sick. Just try to keep it simple with your gear choice and let your diet and training do all the work - make sure you get plenty of rest and you should be fine if everything else is in check.