As to a multi task, one, do it all rig, I'd suggest ya take a peek at a three gun match and look at their rifles..... I adopted a simple system for my HBAR Flat top I saw at such a match that made so much sense for meeting my needs here on the plains of the panhandle. My flat top HBAR has a 10X leaupold for 200-800M Yotes and a Eotech mounted on the floating handguard at the two o'clock position that lets me cant the rifle just a bit for up close snap shots (CQB) but easily transistion back up to twelve o'clock for nailing sod poodles at 600M !
I have the same system set up on a bone stock M1A "loaded" version I picked up last year. It's a quick and easy setup with the addition of a set of rails or getting some hammer monkey (not Eaker) to install em for ya !
That's as "goofy" as I can get this late .....Hope I helped ya think of other ways to solve yer problem.
Bump for good internet gun porn.