At last my first regiment of foot has been finished. I finally worked out how I could base the figures and as mentioned earlier I have added an extra ensign to the regiment.
Everything is based on 40mm squares so there are two sleeves of 12 muskets and a pike block of 16 figures.
The flags are speculative, I used a yellow stags head on a red field as that was part of Alexander Popham's coat of arms. The coats are blue as was common for west country foot and for consistency I gave them a red lining.
The next regiment is already being painted and a third is now off the sprues.
In answer to the questions.
The next regiment will be Massey's, which given it is probably the same regiment as Earl of Stamford's where he was Lt Colonel when it was raised in 1642. They had blue coats with possibly white lining.
The other foot regiment will be William Waller's, which had yellow coats, lining unknown, but no surprise that I will use red.