PC Spec of me

i have an i5 4460 3.20 Ghz , 16 Gb ram , GTX 970 OC and a 120 ssd for this modpack can is run the SPM 5.0 early alpha (plz someone help me , sorry for my english is not my active language)

I think u should be fine for the most part as Rotten himself was running a 980 i believe back in day, granted yours is a 970 but overall u should be ok if at 1080p and dont expect super ultra graphic settings. Id say u would avg around 40-55 FPS and most ppl say 30 FPS is more than playable for this.