Rollmaster set is a really nice timing set. On a stock engine, there are some who'd rather choose a stock type timing set that retains the tensioner and might be a tad quieter than a double roller. just know that you have a couple of choices - rollmaster double roller or stock style. whatever you do, do not use the cheap timing sets using cast iron gears from the brick and mortar auto parts chain stores. those cast iron gears will wear quicker than you think causing the engine to jump timing, run like crap or maybe not at all once it jumps time.
as an option to the rollmaster, check out TA Performance's TA V1522B timing set - stock style, billet gears, 9-way keyway, for use with tensioner. the TA performance catalog has great tips and pics that the website does not. download the catalog and look up the timing sets.
cost wise, there really isn't much difference between the rollmaster and the TA 9-key silent set noted above. it's mainly for folks who'd rather retain a tensioner (and perhaps not do or pay for the machine work on the inside of the timing cover to clearance for a double roller). so, take a look and pick what would work best for you.
AND, as noted, while the timing cover is off, you might want to read up on doing the oil passage mods to the timing cover - as illustrated in the powersource book or written up by Earl known as the Earl Brown mods. just pay attention where to stop the drill bit - you don't go all the way up. plenty of written discussions and videos on the topic.
you have not done any machine work to the main bearing bore w/r/t billet caps so there is no need to worry about oversized gears for the timing set to account for align boring and honing.