Will a 100 watt transformer be enough for 6 path lights and 4 high light lights, may add on with a few more later.
In general, you don’t want to exceed 80% capacity but it’s a good idea to leave a little more room than that. If you’re using LEDs, you should be fine. With halogens, you could easily reach 80% with just a few fixtures. If you are planning any long runs (75 feet or more) from your transformer, it might be a good idea to get at least 150W. I have a 300w transformer. My 30 lights are a combined total of 60w to 70w. I will probably never use more than 100W but I like the added security in case I change my mind.