I had stage 2 Hodgkin's lymphoma when I was 25, did chemo for 4 months (ABVD) and radiotherapy afterward. Healthy ever since (I'm 30 now).
One problem you might be having is dealing with an avalanche of advices, so I'll keep mine short.
Mainstream treatments (chemo+radio) are very effective against lymphoma. From my research the 5yr survival rate is over 80 if not in the 90s, and that's not even the latest stats. I wouldn't replace chemo with other alternative treatment, despite the damage chemo could potentially bring. I did take herbal medicine during treatment, but that's just to alleviate the side effects of chemo, not replacing it.
Everyone is different, but base on my personal experience and people who have gone through similar situations, you should still be able to work and live normally, except on the days you have chemo and possibly a day of two afterward.