My husband and I have recently purchased our first home and investment property using an FHA backed loan with a 203k rehabilitation loan component.  

Define your goals and network with mentors who know the local market.

When you're ready, here are some good DO's and DON'Ts when getting bids:DOWrite out a detailed scope of work that outlines exactly what you want to do.Clearly define what (if any) materials you will buy and what the GC will supply.Get multiple competing bids.Check GC references, call past clients of theirs and possibly even ask to see their work.Closely analyze each bid and ask a lot of questions on things that are not spelled out.Ask each bidder for an anticipated schedule for the work to be completed.Ask each bidder about their desired payment terms.Sign a contract/written agreement with the successful bidder.DON'TWaste people's time if you're not serious about hiring them.Walk the job with competing bidders at the same time.Assume that all GC's will see the work happening the same way.Pay large sums of money in advance unless it's justified.  

Someone to track down dig leads within a defined district or zip code.

Both my wife and I look forward to getting to know our local and expanded BiggerPocket community.Our niches as we have (so far) defined, is buy and hold in the $150-250k range in North Dallas that will rent in the 1-2% range. 

How much more can I expect to spend on the other components of finding leads through a website?

I do this for any vendor I use each year, as I carry workmens comp on my properties for myself and workers I know aren't covered themselves. but if I can prove my vendors have insurance when I'm audited, so my insurance agency compute rates in my favor, because vendors had their own coverageAs far as lien waivers, it's good practice to have anyone that worked on the house sign they have been paid and a lien waiver is used for that. 

My initial strategy is defined: buy and hold multifamily investment properties that cash flow in and around where I live, Philadelphia, PA.

Define your goals and network.

Another important point for Engineered Certification & Foundations For Manufactured HomesAdding a retrofit doesn't mean the existing components are removed (above).