hi mate , I have been rolling my own bait for some time and this year have used a base mix supplied by Quest Baits (they have a very good website) these base mixes are of good quality and well priced. I have been using a combination of the fishy mix and the red birdseed 50:50. you will need to add palatants , enhancers and your own liquid foods and flavours , but by doing this you will be able to create a bait unique to you . Have a look on the cc moores web site or trent baits (both very good) you will find all sorts of goodies on there.
Give it a go mate , if you need to know anything just ask if I can help I will.