That's a good deal!
I have been using Amsoil in my H*rl*y-D*vids*on, but that thing runs so hot it's a virtual oil torture chamber. The other one is a AMF era shovelhead (all stock!) that wants SAE-60 oil, and Amsoil makes that, I use it. The R-bikes don't run that hot at all, so using a more pedantic brand of oil should be okay. The HexHead RT gets Castrol Actevo, lots of miles, 5000 mile oil changes, no issues. It's a Semi synthetic and a very good value.
My oil change intervals are the manufacturers recommended times/mileage.
Way back when I worked at a dealership as a wrench, we had tons of bikes through the shop, and I can honestly say the only oil related engine damage I saw was when the oil that was supposed to have been on a surface in the engine wasn't. Popular bikes were oil injected two strokes, Kawasaki, Yamaha and Suzuki. The oil tank would run dry the owner never checked it and didn't notice, then the engine would seize up. Some riders would run their four stroke bikes completely out of oil, we are talking 15,000 freeway miles on a 350, no service ever, the lack of oil would cause engine destruction. When I took the engine apart the oil had turned to a black un pumpable black goop in the bottom of the crankcase. These are examples of extreme neglect.
Penzoil back then had a nasty habit of foaming up with air if the engine was run at very high RPM's for an extended time, the oil pump would cavatate and stop delivering oil to the top of the engine. Very bad outcome. Also there was a very early brand of Synthetic, Eon, that although was labeled as a 10-40 was way to light, when the engine and oil warmed up the viscosity got so low the oil pump couldn't provide enough volume to keep the pressure up, engine damage resulted. To their credit both companies, came, saw and paid for the customers engine repairs-then studied the issue and corrected it.
My only word of advice make certain what you put into the crankcase is the right grade and viscosity.
Motorcycle oil seems to be a religion to some, but in reality if the grade and viscosity is right I'd hazard a guess you'd be okay. Although if using expensive oil makes you feel good, then you should use it, because "If it feels Good, then do it!"