Aimpoint and iron site cohesion questions

Mr. Vickers,

I need help on a setup and don’t want to waste money on a bad choice,I have a bushmaster 16" barrel with removeable handle which is totally stock for now.
I purchased an aimpoint pro model and wondering how to set up the scope in correlation with the fixed front post,aimpoint told me that with the kit includes a mount that will have the red dot align with front post. First of all is that correct or will I have issues as far things not lining up and then having a cluster you know what setup?
In the event that the scope fails can i align the front site with scope and get a decent cqb grouping?
Should I get rear buis and front and if I did would the height be correct for front and rear site or get rid of front permanent post for a buis?
Help me do it right the first time as this economy is really rough and don’t wish to throw money away.
Many thanks Mr Vickers for your time.

Ps I pre ordered the medal of honor game and can’t wait to get it.