I think your colors are really grand and will work out beautifully. I've made several Bargello quilts and I'll offer this hint. As you cut each vertical column (some patterns call them "rows"), cut all the strips needed for a column and clip them together (I used the hair type clips) for assembling later. Then I used a small square of masking tape and numbered on it the column (I did 1 to 40 or whatever, working left to right) and stuck it on the first colored square at the top for that column. After all columns were cut, I then assembled them adding/deleting squares and strips as in the directions. Leave on the masking tape markers until all columns are sewn together. Saves a lot of confusion and I had no ripping out to do. Assemble columns on a design wall, if you have one, and you can catch any major mistakes before assembling.