recently added extensions, curl and press into my routine

here's my problem
too tired by the time i want to deadlift..

my routine

3 sets leg extensions
3 sets leg curl
3 sets leg press
3 sets squat
3 sets front squat (maybe/sometimes)
3 sets seated DB military press
attempt to complete 1 set deadlift

im thinkin.. my form is off or went too heavy during my curl n extensions
because i can barely pass 3 reps and half my normal weight

noted on the sequence
yea usually start with squat.. it's only when i added the 3 new exercises that i notice the drop in strength.
BUT somethign is really off, feeling like overall dip in strength..

my more or less 'normal' routine

mon - ripp
tues - run
weds - ripp
thurs - run
fri - ripp
sat - hike @ bt caves / swim (maybe)
sun - ripp / swim

diet
bfast - oats / milk / fruits
lunch - bread / eggs / meat / fruits
dinner - rice / meat / veg

no supp, only plain h20

perhaps a better diet to maintain the strength?

injuries are part n parcel of any training, sticky on this anyone?

injury- lower back injury (oh nooo my squat.... just when im progressing.. sigh)
what can you do while one wait for it to recover?

-any lower body movement is a pain to to the lower back
-no bending, standing up to walk can be a pain
- seated calf raise is a maybe

im thinking arm training, but nothing heavy that involves stabilizing the DB
certain shoulders, bi, tri, traps, forearms routine

am looking for workout that will help me with my weak weak military press (http://www.youtube.com/watch?v=xDulY9AJc_c)
what do you guys do? any specific exercise?

here is waht google spewed

http://www.bodybuilding.com/fun/mahler61.htm

cut & paste from above

Tip # 1: Train Legs
emphasize the barbell squat and watch your upper body power increase by leaps and bounds.

Tip # 2: Train Lats
weighted chin-ups are a great complement to the standing military press.

Tip # 3: Push Press with Heavier Weights
gradually get used to weights that you cannot strict military press. Add ten pounds to your current max on
the military press and push press it overhead

Tip # 4: Tight
The more muscles you flex, the tighter you will be. The tighter you are, the more likely you are to overhead press
a heavy weight safely with proper technique.

Tip # 5: Train With Heavy Weights & Low Reps
Sure lots of sets of ten give you a nice pump and make you feel like a king. However, they are not going to do much
to help you with lifting heavy weights. Try keeping the rep range between 1-3 for six weeks and focus
on perfecting your technique. Do not make the mistake of compromising form or cheating to increase training load rapidly.