Jen,
I think the pump good be a good idea. I know that when my husband used his, he could only tolerate a pretty slow drip - or he woud be nauseous (so I can imagine how hard it would be to be pouring the fluid into the PEG). We would set the pump up at about 7:00 in the evening and it would take him until about 10:00 the next morning ot be through the 6 cans. Also, he did not get the PEG until the last week of radiation and chemo - and we ended up being really happy that he did. As I am sure you have heard many times, the effects of the treatment continue for quite some time. In his case, he got the PEG in March and wasn't ready to have it removed until August.

Best wishes to you.
Anita