My vocal range is between G2 and E4, but I cant find a place on the guitar to sing comfortable. If anyone could suggest a good place to try and sing it would be great!
One of the reasons different songs are in different keys is due to the range of each song - its highest and lowest notes. Two songs could both be in the same key, but their highest and lowest notes needn't be the same. Or, two songs could have the same highest or lowest note, but each be in a different key.
So, with a vocal range of over two octaves, which isn't bad, you're going to have to find a suitable key for each and every different song. Yes, there will be songs that have a small range, and these are easier to accommodate. That's because moving them up or down by a couple of tones will still keep them within your vocal range. There will also be songs which might take you too high, so you change to a lower key in order to keep the high notes happy, but that then takes you down too low. Maybe those songs are just not for you.
If you can't already, get so you can play in any key. Then you'll be able to try out a song, realise it's too high/low, and adjust accordingly. You should fing just about every song will have its 'best' key for your voice, but you alone need to find it. That's what good singer/guitarists do.
Are you actually transposing the guitar chords, or trying to sing 'high octave' or 'low octave' to the same chords? I'm afraid the right place for your voice is almost always going to be somewhere in-between! If the song is a Blues in F - F7, F7, Bb7, F7, C7, Bb7, F7 - maybe for YOU it will have to be a Blues in C - C7, C7, F7, C7, G7, F7, C7. Get those transposing chops working!