I believe the rake will angle something like 30-35 degrees both ways. At those angles, it works real good, not sure if having 45 degrees would be that much of a benefit. The top link is also handy with the rake. You would be amazed at how aggressive the rake can be when you alter the top angle. If you’re going to add the aux. hydraulic spools, it would be worth it to go with a three spool valve then just the two. One is always going to be used for top link operation and then that would leave two extra. I plumbed a line set out on to the loader for the front blade and grapple, but would like to have an extra set out there so that I can fabricate either a V-Plow or a blade that has power wings. The other ice feature of two extra would be for a rear blade, one for angle and one for either offset or tilt.
You will love your tractor. I have a list a mile long of things to fabricate for mine, just not enough time to get at all them. Most important thing to get for your tractor is a quick hitch for the three point. Don’t get the Deere I-Match, get one from Tractor Supply. The reason I say this is that the Speeco Hitch has an adjustable top link, where the Deer I-Match does not. This makes hooking up to different manufactured attachments easier.
Randy