If your goal is not to get hyoooge and just to get some nice strength gains then I question your use of deca at all, especially at that low of a dose. Deca isn’t really known for strength gains. At that dose I am afraid you will just be shutting yourself down for nothing.
Why not a simple 6 week cycle of Var at the doses you suggested? You will certainly recover better and should have some nice maintainable strength gains. Take off 6 weeks and do it again. Either way you come out ahead of your proposed cycle.
Actually - having used deca with proviron for a few cycles… from 200-400mg this isnt entirely true.
8-10 weeks of 250mg deca, with plenty of protein will EASILY get the user a good 15lbs, which unlike Test will be accompanied with very little fat and water.
Strenmgth will also be increased somewhat - not as much as an Equal dose of dbol, but in my experience 200mg of Deca will increase strength akin to 200mg of Trenbolone. (Tren will blow deca out of the water at 350-450mg however).
Deca is a decent drug for the results he is asking for. Not to mention the gains are very maintainable post cycle IME.
I however, am not a fan of those who use AAS for anything other than either sports related goals or to be very muscular, anything less is achievable without, and an example of laziness.
Diet and consistent trainig is key - train like you are using (ie. dont miss a session, and eat tons of proptein and manage carbs/fat) and you will be surprised at the results.
That said, i am aware that some men have terrible genes and even after 5 years of training they hit 35 and are still under 200lbs, 6’ and skinny-fat.
I am not surprised when they turn to drugs in all honesty.
ALL THAT SAID OP, you need to be made aware that Deca will cause a very severe suppression of the HPTA - and further to that it will also suppress the libido as well - often even after recovery is achieved!
It is always recommended by myself (especially after a number of cycles similar to yours plus using deca on a number of occassions with test and other AAS…) that Nandrolone users use Cabergoline too… I cant stress that enough. It will make Deca a ver pleasanty drug indeed, the results are worth it, but the libido drop often isnt, caber will avoid this problem - even cure it if need be.