Purchase made - Froling S3 with dual 240 gal Storage

Well folks after a lot of reading and pondering over the last three years i finally made this large purchase. I will be starting this build in late spring or early summer and will try my best to post the steps along the way. I will be doing this build myself so im sure i will look here for guidance from time to time, hope you will join me, very excited to get this system installed for the next heating season.

I've posted the piping diagram below, if you see anything that dont look right or...

Purchase made - Froling S3 with dual 240 gal Storage