Palmetto State Armory has a sale going on, the Vortex Strike Eagle 1x6 scope, along with a Vortex offset mount. 30mm scope body, illuminated BDC reticle, fully multi coated lenses, lifetime warranty. $269.00 with free shipping. I have one, and it is a heck of a deal on a heck of a scope. The 1x8 version of the same scope and mount is $339.99 w/ free shipping.
I have a Viper as well, and the Strike Eagle is just about as nice at a real nice price. By the way, the Strike Eagle is a second focal plane scope (which is really what you want for your use), and has very clear optics, and accurate adjustment repeatability. I like mine, and highly recommend it, especially at the price it is on sale for. Link attached below.
Vortex Strike Eagle 1-6x24 Riflescope and Vortex Sport Cantilever 30mm Ring Mount, 2-Inch Offset
R/E the bipod. There are a number of companies that offer short sections of picatinny rail that can be attached to the vent holes on the bottom of your handguard - the perfect way to attach a bipod, and a better choice than models that attach / clamp to the barrel, as they can adversely affect accuracy. Pictured is one I use on one of my AR's, to mount a flashlight, though a bipod would work just as well.
Larry