How many grow tips is too much?

You just need to consider the future space each node will need and the amount of energy a plant can put towards creating buds. Overall dispite it looking tight I think you should be fine as long as you control the environment properly (air circulation and humidity, temperature) Are you going I recommend doing the preflower trim aswell, it will help reduce the plants footprint in the tent

Hi My rule of thumb is about 1 bud for 4 square inches. You could get in there and get rid of some weaker branches. You need light penetration to the lower buds jut under the top ones so you need to take off some more fan leaves. Check out my greenhouse. LushCo.

It's always a good idea to remove anything below the top 3-5 nodes on each stem usually do this before the flower stretch or just after around 3 weeks into flower. These buds will generally amount to nothing interesting and will not ripen the same as the top of the plant