Check out the Alapin-Diemer Gambit. You can find some theory and example games on the forum of The Unsound Openers.
Sidestep to the French Defence
I think the diemer duhn is okay but I also like to transpose to the advanced variation of the french. I think white has an advantage there are 3 really good books on the french advance Sveshnikovs 2 vol series and Andy soltis wrote a book on it. both you can find the pdf for for free online check out pdfslide dot net
What plans are recommended to combat:
1) d4...d5
2) e4...e6