It seems like the OP would be fine with a 3spd IGH, Sturmey Archer of course. I have A SA XL-FDD dyno drum and SA-RD5w. I also have a Rohloff 14 that I got for my Tour bike. Both have 8000 miles. Before that I wasted 38 years with 4 POS derailler bikes, what total junk. Faster starting and faster to the landfill.

The fastest and most efficient hub is the Sturmey Archer. NO doubt, in any gear. Mostly because the middle gear is direct drive. Just using the middle 3 spds I can go from 7% hills to 31 mph with just 2 clicks of the shifter. Stop to 13 mph, 2nd up to 20, then 3rd to 31+ mph, I usually am in 5th gear before that so I don't know. I do gear it higher than 99% of wussie users probably. 45, 54, 72, 92, 116 GI. Fastest ever at 45.8 mph and longest day was 126 miles. Sheldon's uphill advice for 3 spds is STUPID. I have little problem going high teens. My shifting can be finicky to 1st. The reason they last forever is the direct middlegear, which ought to be used 80% of the time.

How many clicks/ kerchunks for [MENTION=212987]spare_wheel[/MENTION] going 0-30 mph ??? 9 or 11? Lets see his bike carry a sack of potatoes.
Great bikes there @kickstart !!!

My Tour with Herr Rohloff and SA dynohub was 4200 miles, half city, 22 to 120 GI. Bike was like 130 lbs and did lots of hill repeat days of 75/ 85 miles. This hub is definately slower than SA, but still as good as deraillers, but NO kerchunk shifts. Unlike defaillers it Works thru ANY mud slime roads. Only been up to 41.6 mph, same hill. The direct gear is in a dumb spot at 11th gear. Mine is also high at 83 GI, so only good when chasing tri-geeks at 24 mph with a tail wind. ha 7th gear is a slug tho. ... Oh yah, 130 lbs = 8 TdF bikes, a WHOLE team is 9 bikes. Inefficient my eye. Totally dropped any loaded MTB guys I saw. Actually in the big crowded cities in Asia I didn't even bother using more than 2 gears.

Rim brakes with mud slime also gets you useless 20% performance and/or rim grinding. Why would anybody choose roller brakes over Zero maintenance drum brakes ??

I only went around the block with an Alfine8. They seem OK. I never see them being geared more than wussie either.