Have Developed A Very Sensitive Digestive System And Want To

have developed a very sensitive digestive system and want to start exercising and supplementing. my question is in regards to protein. I'm trying a paleo diet approach by cutting out dairy and gluten but rice doesn't seem to bother me so much and paleo protein powders are really disgusting. That being said, I was thinking combining a rice protein powder and colostrum while taking probiotic and enzyme supplements. Knowing that colostrum is a milk byproduct would you say it will help or hurt my sensitive digestive system? I've read mixed reviews. Also, is there any other things you could suggest to help me gain healthy weight without hurting my guts?