Enough to solo Machamp?

2 Alakazams, 2 Espeons, 1 Dragonite (with Hurricane), and 1 Exeggutor with dual Psychic moves.

I think with that, you should be able to defeat a Machamp. Yes, power up the Zam to level 30 at least.

Also try and find a link which talks about damage breakpoints. That will help you decide if any more mons need to be powered up, provided you have the stardust to do so.

i would probably take alakazam (no 3 cp 2062) up to level 30 (out of principle if nothing else) for 64k dust.
then run 3,4,1,2,5,7 or 3,4,1,2,7,8.

Mewtwo!

Posted this a week ago...something to go off of...have soloed around 40 machamps with this lineup. I used to not have to dodge but all of a sudden have to dodge their special with glass cannons just to get enough damage out of first 3 to cruise the rest of battle(just seems like they use special more frequently then used to)...can definitely tweak for fighting different movesets for max efficiency but got lazy and convient to be at a weird gym spot or something in and out quickly

I would say, yes! But this is what I would do:

1: Espeon CP 2527 IV86 (A15) L30 ZH/FS
Give this baby a Fast TM.

2: Espeon CP 2447 IV62 (A9) L30 C/FS
This is great. 100% certainly in the lineup.

3: Alakazam CP 2062 IV100 L25 PC/FS
Get this baby to L30.

4: Alakazam CP 2416 IV84 (A13) L30 PC/SB
Not sure about this.

5: Exeggutor CP 2623 IV86 (A13) L34 C/SoB
6: Exeggutor CP 2506 IV91 (A13) L31 ES/SoB
Solid choices, but you've got better options.

7: Dragonite CP 3050 IV82 (A12) L31 DB/Hur
8: Dragonite CP 3043 IV93 (A14) L30 DT/Hur
Both solid.

9: Gengar CP 1676 IV82 (A12) L23 SC/ShB
Not at this level. This moveset is awesome, I wish I had one. I would take this to L30.

10: Gengar CP 2087 IV73 (A14) L29 H/Sludge
Nah, doubt it.

After that I would go with a lineup in this order:

9
3
1
2
7
8

With a couple of key dodges from the glass canons, that lineup should get the job done.