TV Mav is to be used against big targets (bridges, boats, sam sites, hangars, etc.) and not as plinking single vehicles... it works, of course, but it is not recommended if you need minimum time over target. That is how it would been used in rl.
A version has no magnification so if you cannot vis target by looking out of cockpit it wont help you being glued to EP13.
Easiest is that you popup, boresight your plane (might need to lower the seat to see aiming dot) with target and switch on EP13. This way you will be the quickest.