I found a few ppl (not CPA) with a lot of experience preparing tax for "recreational real estate investors" like me :)

I feel like it has a lot to offer in terms of water access and outdoor recreation.

However, the South side has the Vedder river and a lot more recreation, which is more appealing. 

I did speak with a friend of mine in the lending field and walked through his banks income calc and sure enough the schedule e income gets calculated is a very tricky way that I would be hard pressed to recreate on my own.

From Treas Reg §1.121-1(b)(2):...In addition to the taxpayer's use of the property, relevant factors in determining a taxpayer's principal residence, include, but are not limited to—(i) The taxpayer's place of employment;(ii) The principal place of abode of the taxpayer's family members; [Empasis Added](iii) The address listed on the taxpayer's federal and state tax returns, driver's license, automobile registration, and voter registration card;(iv) The taxpayer's mailing address for bills and correspondence;(v) The location of the taxpayer's banks; and(vi) The location of religious organizations and recreational clubs with which the taxpayer is affiliated.Always good to work with your CPA on strategies such as this. 

The Gantt Schedule is used to manage the overall project timeline, contractor start dates & completion dates.For small day-to-day tasks I use checklists & a Task Manager tool to manage task due dates.All of my Project Schedules and Tasks feed to an Overall Project Calendar so I can see all of my schedules and all of my tasks for each project in a Calendar view so I know what my Contractors are doing on each project and see what tasks need to be done internally.Flipping houses is a very repetitive business so being able to save Schedule Templates or Task Templates is also important so you don't have to recreate the wheel for every project.Here are some tools I would recommend checking out:Trello/Asana/Zoho Projects/Basecamp/Clickup/Monday.com/Workfront - General project management software that includes tasks, Gantt scheduling, calendars, project forums, document storage & team collaboration tools. 

The link below shows recreation visits at national parks going back to 1979.

Rather than recreate the wheel I am looking for something that is easily maintained, has a good flow connecting all financial statements, user friendly and scalable as the company grows.

This group was more landlord oriented, but we are in the process of recreating ourselves to become more balanced between landlording and real estate investing in general. 

But, this is California and recently recreational marijuana passed by voter proposition.