At 49 i'd be playing things safe and doing the good old 3 week hit hard and get out formula ...
Like the test primo and d-bol or var approach .
The less supression you get at 49 the better off your going to be in the long run .. unless you like ED related symtoms.
Getting the boys fired back up again is'nt the same at 49 as it is at 29 , your natural production is going to be low even when you do recover , your not 18 !!
The least amount of suppression with the max gains is what you should be researching at your age .. After all i doubt your taking a run at the Mr O so why go heavy on the risk vs reward side now ..
Do 4 or so 3 week cycles in a year and keep 70% of the gains .. you'll be further ahead . I know this goes against the grain of the hardcore crowd which seem to love the high dosages but i'd be more comcerned about my health at 49 then heading down the trail of becoming a mass monster ..
It's your call , i'm sure you can get good advise here which ever path you decide to take .