Once you get in its a matter of pressure. On the upside, we are forced to stand on the Sonicfox Evo winnings (a.k.a caltrops) because our wake-ups are all meh at best, but you do need to be careful about the command grab.
I personally recommend using his 21122 string on our wake-up because those two hits will rip us out of a lot of options, and I believe we can't really do much against 211xxtackle because of grab immunity (don't quote me on it though) and it clinking our charge armor off.
You can also pressure using 21xxMB sand or MB grenade since both will catch us and click off of wake-up command grab.
I haven't played the MU much but I know that Erron's plan is similar to Lackey F/T's plan in the same MU. Wade through the n.j.p and they run out of options.
Against Lackey F/T, just try to keep him busy with stuff like the gunshot strings and keep a decent distance. Throwing out caltrops takes away a lot of his approach options leaving him with just the unsafe MB roll.