I really have nothing to add, as Cursed covered everything perfectly :)
And as for the acts, Cursed is correct on that point too - there will be three main acts, pus an epilogue. Act Two will be the largest act, but I have a lot of plans for Act Three as well (and yes, it will be a big shift, so you'll have to make sure you've done everything you want to in Act Two - there's no going back. DUN DUN DUUUUUN!)
Also, no IRL Veronica, sorry... but if you have the right Patreon/Subscribestar tier you can download her card and use it in Koikatsu VR. That's something... right..? ;P