Help with HTC Rezound 4.0.3 VZW phone Mod

I have the HTC ReZound VZW Phone still I was able to root the phone but with S-ON

I would like to upgrade to at least 4.1 android version, but...

I read a lot of the updated roms do not support HD video or the camera app does not work right.

As I said I do not have S-OFF Feature its still in S-ON mode but its rooted.

the main reason I want to modify the phone is I don't have enough ram and my phone is very slow and laggy.

I downloaded a few apps that let me toy with swap file, but it says my stock kernel does not support creating a swap file.

So is there any standard kernels that I can use currently on my current build with out having to flash roms?
Can I use a custom kernel on my current build with out losing any of my data apps that allows me to create a swap file...

That is mainly what I'm looking for here the ability to create a swap file to have a bit more ram to work with and maybe speed up the phone.

I'm fine with the 4.0.3 version of android tho I learned most new apps made today require at least 4.1 and above.

...but with out S-OFF and reading the custom roms info. I can see the camera apps and streaming HD and such things do not work. to me that stuff is essential.

So basically what I'm asking for help is a kernal I can flash on top of my current rom that allows me to create a swap file.

Unless anyone knows of any custom roms that also allow this that has a working camera app and HD streaming etc. not any bugs.

I know this is a old phone and prob most of the dev for this phone is outdated but Its still a decent phone and I'm sure lot of work has been done with the series since then.

Any help here is much appreciated.