Don't think for a second that you need to deadlift 400 lbs to build any appreciable muscle! The beauty of weight training is that it's based on relative measures. A smart trainer will tell you it's not the absolute weight that builds muscle, but a percentage of the maximum you can lift in any one all out effort (your one rep max, abbreviated 1RM). Of course, as you get stronger this number will change. But if deadlifting 95 lbs for 5 is your limit, then by all means lift 95 lbs for 5 and you'll still gain muscle as long as you lift with intent and intensity!
1) eat real food - more vegetables, moderate meat, moderate fruits, less grains, less sugar, less vegetable oils.
2) exercise - moderate intensity cardio, sprinting, heavy lifting, dedicated stretching and mobility.
3) live - relax, de-stress, meditate.
Disclaimer: I'm not professionally qualified to make any formal recommendations. I've just done my homework and I'm my own guinea pig. All of my data, unless otherwise cited, comes from a sample size of n=1 (me).