I think most of us started out adding weights here and there. Serious competitors will go to extremes you can't imagine to avoid adding weight. It's up to you to balance your flying and building experience level with making those decisions.

I would add the weight and see how it flies. If you like it, do what you can to shave weight from the front. The plane can handle the weight to a degree - it has a lot of wing area, so straight and level with an extra few ounces is no big deal. I think I'm finding that extra weight is hurting my rolling maneuvers - there is extra wing area, but not extra side area in the fuse.

Not sure if your plane has a battery tray added in the rear of the fuse - that can help. Lighter prop can help, lighter wheels can help, and these are relatively inexpensive changes to make. Also, your 35C XX00 mah rx pack is extra weight; I fly with two 450mah 20C packs, they are very light, and my regulators are the lightest I've seen.