Clothes you should really only buy now are from the Weekend sale events. Join the groups "Fifty Linden Fridays" (50L every Friday), "ACCESS Updates" and "-SATURDAY SALE SHOPPERS-" (60L and 75L every Saturday). On those days, just open the group and check the "Notice" Tab and get the Notecard and you will have a list of store with SURLs/Landmarks/Picture of Item on Sale. You can get skin and hair from these event also but would say the higher quality ones are worth it as there rarely any good skin/hair in these events.
I would put more money toward Mesh Head and Body (LeLukta or Catwa HEADS) (KUPRA, Legacy, Maitreya BODIES), Skin (Skinnery, Deetalez, Insol, Amara Beauty, Pumec, Pepe SKINS) and Hair (DOUX, Stealthic, Truth, Yumyum, Tram). DOUX hair is by far the favorite because they are quite high quality and much cheaper than everyone else because they give you all colors
Find the Mesh Head and Body you suit most.
There is DEMOs for everything usually
I seen comment about Slink Body, I use to main Slinky Hourglass Body and have noticed a drastic drop of store supporting the body so I have already moved on to KUPRA Body as my main body when it had a Launch Release/Black Friday sale. I would most likely recommend Maitreya, if you want a bigger body then Legacy/Kupra but at basically double the cost.
Another thing I like about other bodies that Slink/Kupra lack is able to alpha on the hud without alpha layers. Since no one is supporting Slink Hourglass and most of the clothes were built around relying on alpha on the hud before, most of the clothes don't fit unless you make your own alpha. Kupra is a new body so designer are starting to release alpha with new clothes or clothes just tend to fit better on the body.