well, I can't guarantee it, but if it were me... i'd run the tbol and at the very least a 100-150mg tren everyday till the shot. it should fuck up your SHBG reading (tren usually causes a very low reading), but your test should be very low. (low SHBG would mean a higher % of 'free/unbound test' even though your test would be low)... but I doubt the doc is gonna be curious enough to investigate WHY the #'s are what they are, he'll proabably just see a low test number and write the script. just try to dissuade him from starting with the patch, then moving to the cream, then finally to in-office injections... tell him you want the shot and you're not afraid of needles and you can do it yourself.
For good measure, I know a guy that was on A LOT of different stuff. His last "off script" long acting injection was 1,000mg of test cyp. In an effort to maintain his script, he'd stopped all other compounds just prior to that. 30 days later, he went in for his blood test and his total test was around 2,200ng/dl. I should add, he only maintained his once weekly prescribed shot of 200mg/wk in that last 30 days of test cyp.
So... The idea that other compounds dont add into that number and it taking far longer for the body to fully metabolize and excrete them all, i'd probably have to differ. Based on what he told me.