Oooh MIAM - perfect nappy - blimey!
If was going for one size then def onelife - not because of allegiances - just think they are brilliant. Go for the xs velcro wraps, then popper wraps in the bigger sizes - you can adjust them on legs and tummy for a better fit.
If sized nappies - the would say sandys - they are such nice nappies and because they have poppers you don't get wear/dirt on the velcro. For wraps - would go for either the onelife ones as above or motherease rikkis in small - get bigger wraps later when you know the shape of your baby - poppers always work though. I like totsbots but they are quite bulky and if you live in a hard water area they can get quite rough.
For s stuffable nappy - would go for a fuzzi bunz with microfibre weenee cloths stuffed inside. although quite like look of nature babies stuffables - haven't tried them and can't seem to get much feedback on them. Lollipop don't do those though - would have to go online.
I'm not a prefold fan at all - despite being quite cheap just think they can be disastrous in terms of poo explosions on a newborn and puts soooo many people off cloth. shaped nappies ( like those above) contain poo much better.
I have made my own fleece liners to go in my nappies - bought some fleece from fabric shop and cut them to size - cost about £3 for 24.
Other must haves are bucket, mesh, waterproof bag, washable wipes and paper liners - I can't use these as it buggers up my already dodgy front drain.
Bumhugger night nappies - do you mean ella house bumhuggers - or is there another one I don't know about !! You can get these at Lollipop (I think) or online - they have a 28 turnaround on orders at Ellas House - but may have the one you want in stock. I tried these on ds2 in xl and really liked them - but the hemp does take a while to dry and became a bot cardboard like - they don't like being tumble dried very much either. You shouldn't really need different night and day nappies - especially in the beginning - because baby tends to poo so much you would be changing nappies at night anyway - so no need to think about a 12 hour stint in a nappy til they are just wet at night. Even then if nappy doesn't last the night would just shove an extra booster or fleece in. If you go for them as a fulltime set - they are good.
Hope that all helps - may be worth working out your budget first - remembering that if you buy sized nappies you will have to do it again in about 8 months time.
Think CD and nutty are clothies as well