The best thing to remember is to create your curves in a clockwise direction… otherwise you will have to insert them (insert node) one at a time and move them into the proper order in the Workpiece Tool dialog and then reverse them.
Also I noticed something else you want to avoid… when connecting curves you generally want to set the control handles so they are 180 deg apart to create a smooth transition. In your case you’re connecting an arc to curve so there is only one handle so you need to match the angle the the arc ends at… in this example the curve control point should be 0 degs.
Also a trick to keep in mind to keep 2 joined curves transitioning smoothly is the use the angle formula for the ending control point of one curve and add (or subtract) 180 to the angle formula of the second curve. This way the 2 curves will transition smoothly.
BTW… this pattern could have been done with one curved path from A -> A6-> A3 -> A1 -> A4 -> A7 and the arc from A7 - A6 Then it’s just a matter of placing the control points in the right place for the curve. You have to add the arc because a curve can’t start and end on the same point, otherwise it could be done in 1 curve.