I had some experience with Intruders from 77-91. You can hang snakes and rocks on the aircraft together, but it really was not practical to plan on dropping them on the same mission. Ballistics are really different, and you really only made one pass and then went back home. If you want to be realistic choose either rockeyes or snakes. That would be a more realistic combat load. By the time TRAM came around there were fewer snakeye type missions, more rockeye.
Not saying there were not mixed loads, but mixed load usually meant one or two rockeyes and an LGB on a surface patrol mission. if you didnt use the weapons, you could bring them back.
That said, hanging a mess of ordnance on an Intruder looks pretty impressive. Maybe get some exta rockeyes or snakes.
good luck. can't wait to see it finished.