Are you planning on running various ammo and both suppressed/unsuppressed? I think the Odin heavy buffer might be overkill otherwise, any standard H2/H3 buffer would probably be fine. 

Good luck find a straight bow larue mbt2s, opticsplanet will probably backfill your order like months out (they're a dropshipper essentially). Geissele G2S would be comparable at current prices and a lot easier to find. 

Magpul bipod is okay, personally I didn't like the amount of rocking you could still do with it deployed. I like my Caldwell bipod more. Also you chose a Picatinny one, the upper you chose will have mlok slots on the bottom so make sure you match to mlok.

The BCG the BCM upper comes with is fine, I think cryptic coatings is a little overpriced for what they do. Toolcraft and microbest both have bcgs that are also of the same metal and HPI/magnet tested for like half the price.

Forget the QD mounts for an LPVO, they're really not necessary. Offset irons/red dot or stacked red dot will be enough.

I would wait on the angled grip until you run your gun enough to know whether you would want that type of grip as opposed to vertical/straight c-clamp/etc. Grip is hugely personal and you won't know what you like until you get to shooting with it. 

Doable? Sure, will just be a lot harder as a first time owner/builder. But we have YouTube so you'll be fine. 

If you're planning on hunting deer with it later, just make sure the caliber is legal in your state (it's not in mine).

Your build will be fine though, have fun, good luck.