You're right. It IS a project, and that's kind of the point. The bathing ritual requires you set aside time and make effort to do this magic. And, to be blunt, if you want this thing badly enough, you'll make the time to do the ritual. There aren't any shortcuts. I would recommend reading the instructions on your packet of love herbs or love bath crystals or whatever you're using very carefully, and follow them exactly. They're written that way for a reason.
To better understanding bathing rituals in hoodoo, read this page:http://www.luckymojo.com/baths.html
With the disposal of the water though, don't feel like you have to take ALL the bathwater to the crossroads. You can just take a cupful.
As for your question about High John the Conqueror bath crystals, I think it would help your husband the most if he used them.
Thank you, St. Michael, St. Expedite and La Santisima Muerte!