So I can tell you why I use Brent's on cams like yours
1 - Non adjustable rockers are nice on a hyd cam, no adjusters to break, no extra parts, set preload and forget
2 - Can use a 5/16 pushrod, at about 160/400, it's happy and gives you lots of room, if you want you can go the thicker wall, but really not required
3 - Same 5/16 ball/ball is much cheaper, figure custom ball/cup pushrod lengths into the cost versus shelf stock
4 - Depending on the rocker, adjuster and lobe lift, some valve cover baffles can get a kiss from the adjuster (Shelby, Lemans, etc) no issues when an adjuster isn't there
5 - The price is nice, when you get a set of hardened shafts, Doug's stands and studs, and Brent's rockers, it is competitive with all, and much cheaper than some (ignoring the cheapies, I won't even consider them, and know you didn't either)