diy monitors ?ss

[dirtyp]

I found some cheap parts for monitors, after some more research im going to try to build some. Im going to start out with a basic pair im trying to spend a total of $40-50 on parts not including cabinets. Then if I can make a descent pair in a reasonable amount of time, ill try to make a higher quality version. So eventualy these will end up being refrence monitors.
Im still trying to get a flat response should I go 50-20 or 50-22? would 70-20 matter? back to reading up on this.

Is there any way of making these active monitors ?
For each speaker I need sub,tweeter,crossover,port,terminal ?
If I use two tweeters to make it 3way will that affect its ability to be flat?
do i need a lpad?
Whats the difference in tweeters dome,ribbon,cone,metal?

example PYLE PRO 6-1/2 70-9,000
PIONEER 1" SOFT DOME 3,000-20,000 5k crossover
this should sound ok? right? its 70-20k 28 bucks

heres some of the parts im looking at, wich do you think will work best?
subs
8.45 pyramid wx65 6 1/2'' 70-3500
11.70 GOLDWOOD GW-206 6 1/2'' 60-3000
14.25 PYRAMID W64 6 1/2" 60-5000
12.88 GOLDWOOD GW-S650 7" 35-5000
16.50 GOLDWOOD GW-6028 6-1/2 55-3,000
15.65 DAYTON PA165-8 6" 80-5,000 Hz
15.50 PYLE PRO PDMW6 6-1/2 70-9,000 Hz
tweeters
6.14 AUDAX HY014R1 TITANIUM 1/2'' 4000-19
4.60 DAYTON ND20FA-6 3/4" NEODYMIUM DOME 3,500-25
4.93 TANG BAND 13-1264SA 1/2" TEXTILE 3,000-20
6.95 GOLDWOOD GT-322 1" TITANIUM DOME 3,500-20
12.90 PIONEER FBDE75-52F 1" SOFT DOME 3,000-20
2.30 GOLDWOOD GT-302/S 2-3/8" MYLAR DOME 4,000-19
.25 ONKYO 3/8" MYLAR DOME 6,000-20
11.00 PYRAMID TW22M NEODYMIUM silk dome 1" 2,000-20
9.88 1-3/4" NEODYMIUM TWEETER PAIR 3,000-20