I've always found that low maintenance toiletries is important but the KEY is limiting shoes!! If you can't wear a pair of shoes with at least half your clothes, you're taking too many! I have banned all trainers/sneakers for INT travel--ack--I might look like a tourist!! (heaven forbid!!) 2 pair shoes MAX. You'll find it so easy to deal with packing.
I don't take many knits--just woven fabrics--they pack lighter. My fave trick is JUMBO HEFTY bags--OMG!!! You can get 2-3 garments fold in each one and smaller items fit in gallon bags, undies in quart size bags--throw them out after a few trips. They keep stuff organized, clean and safe from TSA type hands...and you can fit so much in a small space.