Hextech Bundles worth it?

Hey guys, I've got a bit of RP left with nothing in mind to spend it on. I've been thinking about spending some on Hextech Chest and Key Bundles (anywhere from 1-5). I currently have about 2000 orange essence, and 600 blue essence, along with 5 skin shards and 2 champ shards. Considering these circumstances, I personally thought that maybe spending some RP on the Hextech Bundles would be a good investment because of the amount of essence I have. Do you guys also think this would be a good way to spend RP for me, or do you think it would be better to just save it for skins that come on sale in the store? Any opinions are appreciated.