I did the exact conversion you are considering.
Going to a 36T ring does make the shift a little clunkier with a standard triple mech. You can fiddle around with the mech position and adjustment to make it smoother though. When I replaced my triple mech eventually I got a double specific SLX front mech, it has a different swinging arc (?) that is more suitable for the jump between 22 and 36 tooth rings.
Fitted a C4 ring god (as offered above) too, it comes with longer bolts. The 44T ring comes off and the ring god goes on, simple as that, no crank removal necessary. Also fitted a stinger that worked very well, although as mentioned above not absolutely necessary.
I’d take up thejesmonds offer, bargain way of trying it out