Need help checking if I have the right components for my design, and how to wire them.

Hello, I am re-designing a battery powered screwdriver, and I need help checking if the parts I am going to use will work together, and how to wire them. I have included images of all of the parts I am going to use. I'm using two 18650 li-ion batteries in series with a 2s 7.4v Battery Management System and a Micro USB step-up converter to charge them. Then I have a momentary push button switch that will go to a 3-Position DPDT Slide Switch that will control the direction of a 6v DC Motor. (There is no speed control for the motor, it goes through a gear box.)
I would love some advice on what order to wire all of these parts. I am a beginner, so any help is much appreciated!

Hi Leo-I think you're generally OK with your design, but there are a few things I need to call to your attention before we get to the diagram.
(1) The battey charger is rated 4 amps.  You'll need about 7 amps from your USB source if you plan to run the charger vat its full output.  USB isn't normally capable of supplying that much current.
(2) The pushbutton switch is way too small. You'll need to find out how much current the motor draws when heavily loaded (try connecting to a bench power supply) and then either find a switch that can handle that much current, or add a MOSFET  to be controlled by the switch you have.
(3) although the slide switch you selected is rated for 6 amps, it won't hold up to very many operations if it is switched while the motor is running.  If it needs to last a long time, consider using a toggle switch, maybe one with silver contacts.....and a question- how much current is the step-up converter good for?-Rick.  

Leo, a couple more comments- Ricks comment about your push button switch are spot on, you need a MUCH beefier one- Note that with Lithium batteries you MUST connect each battery to your board, this is what the BM connection is for in your board, see below (but also check your board's instructions).- I'd suggest you use 12V for charging, however check if your charger board can take this (some only take up to 9V).  If you need to step down you can get a board for this or use a 3.3V or 3.9V Zener diode (with appropriate current rating) or maybe 5 beefy diodes in series to bring the voltage down 3V.  USB will take all day to charge these batteries.Your slide switch should be ok as you will be switching off load most of the time I hope...I have modified the diagram in your last post as follows:

Have you considered looking for help from some manufacturers? I am ordering boards at PCBGOGO, and their engineers will be very enthusiastic to help you solve some problems.They master various EAD softwares such as Allegro, POWER PCB, ORCAD, AUTO CAD and CAM350 etc. They are very familiar with the design standard and technology standard in the local and international market, and also have full experience about the PCB layout and wiring design, power supply design, SI analysis and EMC design. They have the ability to finish the whole design process from drawing the schematic to assembly.