How to close sales if "not available"??? Day-job time conflict

I'm basically a noobie in offline sales, but I enjoy connecting with people in person and on the phone. I'm here seeking advice due to a business purchase I've made. I've been reading people's posts here about postcard marketing and cold calling, and am motivated to ask "is this possible?" My main "problem" in going forward is working 9AM-3PM in a day job, the hours I've thought most offliners were available. Here's my situation:

I purchased LeadNetPro in February of this year, and it has offline and online scrapers. It also has an inexpensive voice broadcaster--I could do a 30 second VB to 1000 businesses for about $9 (cold calling is necassary, but this is a viable option if set up correctly). I considered doing postcard marketing and voicebroadcasting as an offline advertising service for others, but changed directions due a business partner letting me know he'd split commissions with me if I sold his SEO services to others. In my head, I changed platforms from postcard marketing to SEO marketing. I'd never dropped the VB idea.

I had one friend, a plumber, who wanted my original offer of postcard marketing and VB advertising for him, but when I proposed the latter (the SEO) he declined--but only since it required the full payment up front. I'd broken it up in the first offer. I've yet to alter my proposal to him.

Anyway, my reluctance in moving forward is wondering how I can advertise my services (or others--the SEO) to people if I'm not able to answer my phone. I thought of forwarding to a K7 or GoogleVoice account.....it just seems so impractical, for if people are willing to either punch a key to talk to someone or return a call, I've thought they'd like some actual "customer service".

I've been reading some old posts here on the addictiveness of getting sales, and yes, it's true. I can completely relate to people putting in long hours if they get 1,2, or 5 sales in a day.

I'm just unsure how and when I could do this, and with what adjustments. I'd love some ideas or direction here.

I want to say "Thank you" to any and all who contribute here--the advice people give can literally make dreams come true :-). I've seen it many times.