I'll be doing an 13 day self contained tour in a few weeks and I'll be camping. I've done a number of shorter self contained tours before with two rear panniers, four panniers and a handlebar bag. I have been given an Ortlieb Rack Pack (essentially a duffle bag). It will fit my tent, sleeping bag and sleeping pad with room to spare.

For this trip I can fit everything in the four bags or the two rear plus the Rack Pack. I kind of like the fact that with the Rack Pack I won't need to stuff things in. I think I know the answer, but which set-up would handle better and provide the better/easier ride?

The ride will be on pavement, +/- 30 rolling miles (no big hills) a day and I'll be riding a LHT.

Yes, I could load up and try both set-ups, but I thought that I'd ask here first.

Be safe and thank you.