It depends on how comfortable you are with worrying about the portfolio and managing the investments yourself. 0.8% for a portfolio that size is actually pretty cheap compared to most full-service advisors (I work in the industry as an analyst so I know a lot about pricing on this side). Most people here won't agree because they enjoy the "challenge," of managing your own money and don't want/need a human advisor with experience.
Some people don't have the patience to track the market to truly manage it themselves or want to deal with the uncertainty of making investment decisions on their own. Some people get really stressed out when their portfolio is down 10-20% or more and there's no one to talk to about it. In those situations many people freak out and sell at the absolute worst time. That can be truly expensive! As I said before, some people may think it's dumb to worry about that, but I see it all the time. If you feel like you're worried about this, you should consider signing on with the advisor.
If you're determined to manage it yourself one day then learn as much as you can on your own and from the advisor. Then when you feel confident about your asset allocation and strategy you can manage it yourself. Or not :)
Managing money less than $1M, $1M-$10M, and $10M+ are more different than most would believe in practice. Losing 10% of $100k kinda sucks, but losing 10% on 10M can make some people act crazy. There is a reason why the rich get richer. I usually don't post on here, but I think this is an important thing that most overlook.
But the choice is yours!