LG G2 no MMC, opinion needed

Hi everyone
I wanted to ask something.
I am planning to buy LG G2 phone. This phone has only internal memory of 32GB but there is no extendable memory card slot.

I wanted to ask something, about such phone models. I am a music lover and my current phone has 16GB external card and it is 90% full with songs (around 3000 songs) and a huge collection of wallpapers and camera roll, all of them are on external memory card and not on internal.

Now as in case of LG G2, everything will be on internal memory. Will it slow down the phone, because keeping such huge data on internal might slow down the read-write rate. This is my assumption. Otherwise if internal memory is 32gb, obviously it is not for software only. Afterall i am not going to install each and every app on play store.

Please guide me.

Opinion regarding Skydragon GPE 5.1

I've been pretty disappointed since the Sense stock 5.0.2 update, especially regarding battery and some lag here and there. I also have a problem with the contacts (they don't appear when people call me except if the country prefix in memorized).
I am thinking about trying a custom rom and since seeing the stock android on my mom's Moto G and really like it so from my research it seems skydragon gpe 5.1 is the best one. Anyone that tried it can give me his opinion please?

Cheers

Need your opinion regarding a hardware problem.

So my screen stopped working a few days ago. It went black slowly, from the edges towards the center.

I took it to a repair shop and after they've tried a few screens I have came to a conclusion that some other hardware is faulty, as the current screen is 1000% fine. (Digitizer is functional, and the backlight works because the panel is OT dark when viewed in a dark room.)

I think my flex cable is faulty. What do you think? In this state the phone's not worth more than 100 euros so i don't feel like throwing it away, a flex cable cant be more than 50 euros?

So let me know what do you think